User Guide

Technical Instructions Powertop Two-Way Flared Valves Normally Open/Normally Closed
Document No. 155-310P25
May 16, 2005
Page 4 Siemens Industry, Inc.
Table 3. Maximum Water Capacity - U.S. Gallons per Minute.
Valve
Size
Inches
Pressure Differential - psi
Cv\1 2 3 4 5 6 8 10 15 20 25 30 40 50 60 75
.50
1.0 1.4 1.7 2.0 2.2 2.5 2.8 3.2 3.9 4.5 5.0 5.5 6.3 7.1 7.8 8.7
2.5 3.5 4.3 5.0 5.6 6.1 7.1 7.9 9.7 11.2 12.5 13.7 15.8 17.7 19.4 22
.75 6.3 9.0 11 13 14 15 18 20 24 28 32 35 40 45 49 55
1.0 10 14 17 20 22 25 28 32 39 45 51 55 63 71 78 87
1.25 16 23 28 32 36 40 45 51 62 72 81 88 101 114 125 139
Table 4. Maximum Water Capacity - Cubic Meters per Hour (m3/h).
Valve
Size
in
mm
Pressure Differential - kPa
1 10 20 30 40 50 60 80
Kvs/
100
150 200 300 400 500
15
0.09 0.27 0.38 0.47 0.54 0.60 0.66 0.76 0.85 1.0 1.2 1.5 1.7 1.9
0.21 0.68 0.96 1.17 1.35 1.51 1.66 1.91 2.14 2.6 3.0 3.7 4.3 4.8
20 0.51 1.7 2.4 3.0 3.4 3.8 4.2 4.9 5.4 6.7 7.7 9.4 10.9 12.1
25 0.9 2.7 3.8 4.7 5.4 6.1 6.7 7.7 8.6 10.5 12.2 14.9 17.2 19.2
32 1.4 4.4 6.2 7.6 8.7 9.8 10.7 12.3 13.7 16.9 19.5 23.9 27.6 30.9
Table 5. Maximum Steam Capacity - Pounds per Hour.
Valve
Size
in
Inches
Inlet Pressure - psig
2 5 10 15
Pressure Differential - psi
Cv/1 1 2 1 2 3 4 5 2 4 6 8 10 6 9 12 15
.50
1.0 12.0 16.6 13.0 18.2 22 25 28 20 28 34 38 42 38 45 50 54
2.5 30 42 33 45 55 62 69 51 71 85 96 104 94 112 125 135
.75 6.3 72 140 83 120 140 160 180 120 180 210 240 260 240 280 320 340
1.0 10 120 170 130 180 220 250 280 210 280 340 380 420 380 450 500 550
1.25 16 190 270 210 290 350 400 440 330 460 550 600 670 600 720 810 870